Area Code 509-223 located in TONASKET, OKANOGAN, WA, more detail is as below. Place NPA (Numbering Plan Area) : 509 NXX (Local Number Prefix) : 223 City : TONASKET County : OKANOGAN State : WA (Washington) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 53047 LATA (Local Access Transport Area) : 676 Rate Center : LOOMIS ZIP Code Count : 55 ZIP Code Frequency : 25 ZIP Code : 98855 Other Information NPANXX : 509223 Switch CLLI (Common Language Location Identifier) : LOMSWAXARS2 Time Zone : Pacific (GMT -08:00) Observes Daylight Saving Time : Yes Company : FRONTIER COMMUNICATIONS NORTHWEST INC. - WA OCN (Operating Company Number) : 4423 Coverage Area Name : LOOMIS Latitude : 48.8219 Longitude : -119.6290 ‹ previous : 509-222 next › : 509-223 Telephone Number List 509-223-0000 ~ 509-223-9999